Carburetor engines
Examination
1. Disconnect the hoses from the reservoir and thermal vacuum control valve (TVR) and blow.
2. The TVR is screwed into the right side of the intake manifold. On a cold engine, disconnect both hoses from the TVR. Blow out the TBP by attaching an auxiliary hose to the fittings. Air should only pass through the TVR when the engine is warm.
3. The tank is mounted in the rear left side of the engine compartment.
4. Disconnect hose A from the side of the tee. With the engine running, create a vacuum on the hose - while the engine speed should increase slightly, there should be no leakage in the hose. Attach the hose in place.
5. Disconnect hose C from the carburetor and blow through with the engine running - there should be no leakage. Attach the hose in place.
6. Air cleaner pipe. Disconnect hose B from the manifold, blow through the hose and create a vacuum in the hose with the engine not running - there should be no leakage. Attach the hose in place.
7. If during checks pp. 4–6 a negative result appears, the tank should be replaced.
Injection engines
Examination
1. Disconnect all hoses from reservoir and solenoid valve and blow through. The tank is mounted in the rear left side of the engine compartment. The valve is screwed into the back of the suction manifold.
2. To check the tank, disconnect the hoses and blow into fitting A - air should not pass. The air must flow freely through port B. Otherwise, replace the tank.
3. Remove the solenoid valve to check.
4. Air should only flow freely through ports A and C on the de-energized valve. When voltage is applied to the valve, air should only pass through ports A and B.
5. At negative results of check the valve replace.
Tank with absorber
Tank with absorber on injection engines
Replacement
1. Mark the route for each hose and the order in which the hoses are connected to the tank.
2. Loosen the clamps and disconnect the hoses.
3. Remove the tank from the bracket.
4. Install the tank in reverse order.
Thermal vacuum control valve (TVR)
Thermal vacuum control valve (carbureted engines)
TVR valve (indicated by an arrow) screwed into the intake manifold.
Replacement
Work is carried out on a cold engine.
1. Drain the liquid to the level of the valve, or prepare a plug.
2. Disconnect the hoses from the TVR.
3. Carefully unscrew the TVR from the manifold, remove the gasket.
4. Install TVR in reverse order. Replace gasket.
Solenoid valve
Replacement
1. Remove the air duct.
2. Disconnect the battery from the mass, disconnect the connector from the valve.
3. Mark the hose connection order on the valve.
4. Loosen the clamps and disconnect the hoses, remove the valve.
5. Install the valve in reverse order.